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我試圖通過客戶端訪問遠程Wildfly 10.x服務器上的EJB，但我無法讓它工作。再次從遠程客戶端調用EJB
我已經看到this，this,this,this和許多其他帖子，但它仍然不起作用。
根據上述帖子中的建議，我有兩個Java代碼版本引發「無法註冊EJB」或「無法連接到服務器」。
也許問題出在服務器配置上，但我不是這裏的專家。
我真的很感激任何幫助。
我部署的EJB上WildFly 10.1遠程服務器：
java:global/Remote/EJB-Remote-Demo-ejb-1.0/CalculatorBean!com.maggioni.Stateless2.RemoteCalculator
java:app/EJB-Remote-Demo-ejb-1.0/CalculatorBean!com.maggioni.Stateless2.RemoteCalculator
java:module/CalculatorBean!com.maggioni.Stateless2.RemoteCalculator
java:jboss/exported/Remote/EJB-Remote-Demo-ejb-1.0/CalculatorBean!com.maggioni.Stateless2.RemoteCalculator
java:global/Remote/EJB-Remote-Demo-ejb-1.0/CalculatorBean
java:app/EJB-Remote-Demo-ejb-1.0/CalculatorBean
java:module/CalculatorBean
服務器配置：
<subsystem xmlns="urn:jboss:domain:remoting:3.0">
<endpoint/>
<http-connector name="http-remoting-connector" connector-ref="default" security-realm="ApplicationRealm"/>
</subsystem>
POM的配置：
<dependency>
<groupId>org.wildfly</groupId>
<artifactId>wildfly-ejb-client-bom</artifactId>
<version>10.1.0.Final</version>
<type>pom</type>
</dependency>
我有現在的兩個版本我碼。
版本1：
private static RemoteCalculator lookupRemoteStatelessCalculator() throws NamingException {
final Hashtable jndiProperties = new Hashtable<>();
jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
jndiProperties.put("jboss.naming.client.ejb.context", true);
final Context context = new InitialContext(jndiProperties);
String appName = "Remote/"
String moduleName = "EJB-Remote-Demo-ejb-1.0/";
String beanName = CalculatorBean.class.getSimpleName();
String viewClassName = RemoteCalculator.class.getName();
final String jndiname = "ejb:" + appName + moduleName + "/" + beanName + "!" + viewClassName;
System.out.println("jndiname is : " + jndiname);
return (RemoteCalculator) context.lookup(jndiname);
}
這個版本是引發錯誤「無法註冊一個EJB接收器」：
Apr 21, 2017 10:44:47 AM org.jboss.ejb.client.remoting.ConfigBasedEJBClientContextSelector setupEJBReceivers
WARN: Could not register a EJB receiver for connection to <myEnvironmentNumber>.jelastic.dogado.eu:4447
java.net.ConnectException: Connection refused: no further information
........
Exception in thread "main" java.lang.IllegalStateException: EJBCLIENT000025: No EJB receiver available for handling [appName:Remote, moduleName:EJB-Remote-Demo-ejb-1.0, distinctName:] combination for invocation context [email protected]
at org.jboss.ejb.client.EJBClientContext.requireEJBReceiver(EJBClientContext.java:798)
版本2：
private static RemoteCalculator lookupRemoteStatelessCalculator() throws NamingException {
Properties jndiProperties = new Properties();
jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
jndiProperties.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory");
jndiProperties.put(javax.naming.Context.PROVIDER_URL, "http-remoting://<myEnvironmentNumber>.jelastic.dogado.eu:4447");
jndiProperties.put(javax.naming.Context.SECURITY_PRINCIPAL, "app");
jndiProperties.put(javax.naming.Context.SECURITY_CREDENTIALS, "app");
jndiProperties.put("jboss.naming.client.ejb.context", true);
final Context context = new InitialContext(jndiProperties);
String appName = "Remote/";
String moduleName = "EJB-Remote-Demo-ejb-1.0/";
String beanName = CalculatorBean.class.getSimpleName();
String viewClassName = RemoteCalculator.class.getName();
final String jndiname = appName + moduleName + beanName + "!" + viewClassName;
System.out.println("jndiname is : " + jndiname);
return (RemoteCalculator) context.lookup(jndiname);
}
這個版本是引發錯誤「無法連接到任何服務器」：
Apr 21, 2017 9:42:10 AM org.xnio.Xnio <clinit>
INFO: XNIO version 3.4.0.Final
Apr 21, 2017 9:42:10 AM org.xnio.nio.NioXnio <clinit>
INFO: XNIO NIO Implementation Version 3.4.0.Final
Apr 21, 2017 9:42:11 AM org.jboss.remoting3.EndpointImpl <clinit>
INFO: JBoss Remoting version 4.0.21.Final
jndiname is : Remote/EJB-Remote-Demo-ejb-1.0/CalculatorBean!com.maggioni.Stateless2.RemoteCalculator
Exception in thread "main" javax.naming.CommunicationException: Failed to connect to any server. Servers tried: [http-remoting://<myEnvironmentNumber>.jelastic.dogado.eu:4447 (java.net.ConnectException: Connection refused: no further information)]
兩個版本的jboss-ejb-client.properties正在尋找這樣的：
remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED=false
remote.connections=default
remote.connection.default.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS=false
remote.connection.default.connect.options.org.xnio.Options.SASL_POLICY_NOPLAINTEXT=false
remote.connection.default.host=<myEnvironmentNumber>.jelastic.dogado.eu
remote.connection.default.port = 4447
remote.connection.default.username=app
remote.connection.default.password=app
編輯：
我想這個問題可能與用戶配置WildFly。不幸的是，我不能使用腳本來設置用戶，所以我必須直接將它輸入到application-users.properties中。
假設我想設置一個用戶名= MyUser和一個Password = MyUser應該看起來像username = HEX（MD5（MyUser'：'realm'：'MyUser））？
默認情況下，WildFly使用8080作爲遠程處理端口。看看https://docs.jboss.org/author/display/WFLY10/EJB+invocations+from+a+remote+client+using+JNDI –
你是否啓用了公共IP https://docs.jelastic.com/公共IPv4的？ – Ruslan
@FedericoSierra將端口更改爲8080顯示以下錯誤： 線程「main」中的異常javax.naming.AuthenticationException：無法連接到任何服務器。嘗試使用服務器：[http-remoting：// .jelastic.dogado.eu：8080（身份驗證失敗：所有可用的身份驗證機制失敗： JBOSS-LOCAL-USER：javax.security.sasl.SaslException：無法讀取服務器質詢[引起java.io.FileNotFoundException：\ opt \ repo \ versions \ 10.1 \ standalone \ tmp \ auth \ local7673066471051300535.challenge（Das System kann den angegebenen Pfad nicht finden）] –
ken